... kinds of medium ISO9001 Ultrasonic water level meter for level measurement Ultrasonic water level meter working principle: the probe launch a ... level:4m,6m,8m,12m,15m,20m,30m Material level:3m,5m,7m,10m,15m More Ultrasonic sensor for distance measurement ... switch,Capacitance position and level sensor,Ultrasonic displacement sensor/level meter for industrial,mobile and oil,gas,fuel markets.Know more ...